This spreadsheet is for designing overhead bridge crane crane load and crane runway
beam based on the following design codes

AISC 360-10 LRFD 2010 and ASD 2010 code

AISC ASD 1989 code

CSA S16-14
code

The spreadsheet is capable to design up to 2 cranes running in the same aisle at
the same time.

For crane runway beam section, the user has option of

AISC / CISC W or S section, CISC WWF section

AISC / CISC W or S section combined with cap plate

AISC / CISC W or S section combined with cap channel

Any custom W or W and C combined section

The custom section option gives user great flexibility to select the crane runway
beam section and optimize the design.

The spreadsheet also outputs the crane loads imposed on building column for user
to relay to other structural analysis software for building structural analysis

The spreadsheet can design both top running and underhung overhead bridge crane
runway beam

The Unique Features of This Spreadsheets

The spreadsheet is capable to design up to 2 cranes running in the same aisle at
the same time.

The spreadsheet is capable to get accurate member forces from 2~8 concentrated moving
loads for beam section design.
Most other similar crane beam design programs use the formula of 2 concentrated
moving loads to get the beam member forces. For large tonnage crane it’s common
that there are 4 wheels on one side of bridge which means there are 4 concentrated
moving loads imposed on the simple span beam. Converting 4 concentrated moving loads
to 2 to use the formula can overestimate the moment up to +18% depending on the
beam span and load. Civilbay spreadsheet calculates the member force using
true moving load, not the formula or approximate approach, as such it can achieve
the most economical design.

The spreadsheet calculates beam bending coefficient Cb to account for
the non-uniform moment distribution along the beam unsupported length. Most
other similar crane beam design programs assume Cb =1.0 as a
conservative approach but it may under estimate the beam LTB resistance capacity up to 20%.
CivilBay program calculates the accurate beam LTB capacity allowed by design
codes , as such it can
achieve the most economical design.

The spreadsheet is capable to design any custom crane beam section which gives user
great flexibility to select the crane runway beam section and optimize the design.